VERY unsocial robo hamster?

I have a robo hamster that is about a year old, more or less. She completely hates me. Every time my hand goes in the cage, she screeches until it is removed. She has recently managed to get dehydrated (her water bottle was still full for some reason) and completely listless, so I held her and syringe fed her until she perked up, and she promptly latched onto my fingers with her little teeth multiple times. Any tips on getting this little girl to like me, if not at least tolerate me?